This document is the final report of a second year study of the optoelectronic aspects of avionic systems. Avionics systems are moving toward the use of a combination of multiplex data buses for the transmission of the growing number of digital signals found in modern aircraft and high performance dedicated cables for the transmission of wide-band analog signals. Optoelectronic technology based on the use of light emitting diodes (LEDs), multimode flexible fiber optic bundles, and photodiodes offers a data transmission capability that is consistent with military requirements and potentially superior to wire techniques. The optoelectronic interface is suitable for use in high data rate digital data buses and wide-band analog channels. The primary objective of this program is to study non-coherent optical components, devices and techniques in order to discover the unique constraints imposed on optoelectronic data transmission systems. This second year study starts with the results of the initial study performed on contract number F33615-72-C-1565 and goes further into the study of signaling and detection, data bus structure, and optoelectronic components. A study of radiation effects on active and passive optical components is also presented.

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